The history of the Mount Saint Michael Go up starts with a legend it even closely related to that of Assembles Gargano, in Pouilles (Italy):
At the beginning of VIIIème century, in 708, Aubert, bishop of Avranches, following an appearance of the Mount Saint Michael archangel receives the order to build a building in which the merits of the archangel would be rented. The poor bishop believing to follir does not dare anything to make and decides to wait.

One second time the archangel appears to him, and Aubert always doubts. But with the third appearance of the archangel plus any doubt does not remain with the spirit of the bishop, bus the Mount Saint Michael, furious not to be listened leaves in Aubert a proof of its capacity: in cranium of the bishop appears a circular hole. But the bishop should not suffer from it too much because he will die only of the years later. Today the cranium of Aubert is preserved in the basilica of Avranches. Is this history true or false? Nobody can bring the proof which will tip the scales on a side or other. At all events, the unquestionable bishop that these visions were not to put on the account of the madness, undertakes the work ordered by the archangel. He makes build a small oratory in form of cave which can contain a hundred people. There remain nothing of this construction except a visible wall in one of the rooms of the abbey (Notre Dame under ground). In 709, construction of a small church by Aubert.

During two centuries of the canons will accomodate the pilgrims but with the wire of time they will forsake their mission. Mow of this thing the duke of Normandy, Richard 1st, decides to replace the canons by monks Benedictines come from the abbey of Saint-Wandrille. That occurs into 966, it is this year which is appointed like that of the foundation of the abbey. The Benedictines are large builders. They make build a church and some buildings. The pilgrims flow increasingly many and the fame of the Mount Saint Michael Mount does not delay to be known from all the kingdom. Per time of fog, many pilgrims lose themselves on the strikes and perish drowned. Moreover, the dye sticks, kinds of moving sands, bury the imprudent ones which venture in bay without the assistance of a guide. With the foot of the abbey, a small city is built. The houses for the wood majority are used to accomodate the pilgrims. At the beginning of the millenium the trade of hotel thus exists already with the Mount Saint Michael Mount. At the top of the rock, the monks as for them do not waste their time, thanks to many gifts, they build a vast church and several additional buildings: refectory (place where the monks take their meals), dormitory (place where they sleep), a room of work, a promenade (place of relaxation), a chaplaincy (place where the poor are received and receive the alms which often consists of a light meal). When the duke of Normandy William the Conqueror decides to invade England, it asks its assistance the abbot of the Mount. This one made arm four boats. After the victory of Hastings, Guillaume as a sign of recognition will make gift of several English territories to the abbey. In one century the abbey considerably grew rich and increased. But at this beginning of XIIème centuries, misfortunes will follow one another. In 1103 the northern side of the nave of the church breaks down. Ten years later a fire is declared in a house of the city. Fire is propagated house in house and ends up reaching the abbey. Less than twenty years after this catastrophe a new fire ignites the abbey again. This time too is for the monks who slacken themselves and do not make their office seriously any more.

The king of France Philippe-Auguste, to compensate the monastery for the injury caused by the Breton ones allocates a strong amount of money to the abbey. This money is immediately invested in the construction of the Wonder. The construction of this building on a ground also not very favourable (the ground is inclined) is a genuine turn of force. In 1228 the cloister, top of the building, are completed. Very few events will come to mark the remainder of XIIIème century, the abbots follow one another, all bring their mark in the construction of the Mount: to replace the old palisade out of wooden, of the turns and the ramparts are built, the home abbey are also built during this period. At the beginning of XIVème century begins One hundred Years the war known as. The abbey loses the totality of its incomes coming from its English priories. In 1356, the English seize Tombelaine and take for target the Mount Saint Michael Mount. The knight Of Guesclin is named chief of the garrison of the Mount. With the head of its troops it gains victory over victory and moves away for several years the English threat. Pierre Roy is elected abbot in 1386, conscious of the danger which the English represent, it decides to build new defenses for the entry of the abbey. The Perrine tower, the tower of Corbins and more particularly Châtelet give to the entry of the monastery an insuperable defense. The English after one period of respite take again the offensive and, after the defeat of king de France with Azincourt, plus nothing does not seem to be able to stop them. Robert Jolivet the new abbot, organizes, thanks to many taxes, the construction of the ramparts in order to protect the city which becomes itself a protection for the abbey.

As a far-sighted man, it makes build a cistern to feed out of fresh water the monks, the soldiers and the inhabitants of the Mount. When Rouen, capital of Normandy falls to the hands from the English, all the area except the Mount Saint Michael is occupied by the English. In front of so much of power the abbot Robert Jolivet gives up his monastery and proposes his services with king d' Angleterre. In 1424, the English besiege the Mount, but the assistance of the abbot is useless. It conceived the defensive system of the city so well that nothing manages to shake it.

The Montois (name given to the inhabitants of the Mount) manage even by some attacks flashes to discourage the English. In 1425, after having undergone a defeat more cuisante that the others, the English are folded up.

After this victory, in spite of the threats which always weigh on the area, the pilgrims tributary with the Mount to pay homage has the ultimate defender of the kingdom: the Mount Saint Michael archangel. In 1433, a fire devastates part of the city, the English wanting to benefit from this occasion gather their army and prepare the attack. In 1434, the English ruent themselves on the Mount the Mount Saint Michael, a bloody battle follows themselves from there. The English manage to make a breach in the rampart and penetrate in the city by shouting victory already. Fortunately, the captain of the Mount reorganizes his troops and counter-attacks so strongly that the English escape by giving up two bombard. The victory of the Montoises troops gives again confidence with the French Armies and, on all the territory, the English move back. The battle of Formigny, in 1450 will bring finally peace to Normandy.